CREATED BY: KT.P
, SOIL CHEMISTRY
1
Why is studying soil chemistry is important in Engr.? CHEMICAL PROPERTIES OF SOIL
Electrical conductivity of soil is essential in agriculture and The ability of soil to provide the essential elements needed for plant
environmental science since it directly influences plant growth and growth includes:
may be used to assess soil health. The availability of NPK elements
Conductivity is a measure of a material's ability to Other chemical properties
conduct electrical current, and in the case of soil Clay minerals present
Humus content
J. Thomas Way is considered the Father of Soil Chemistry. Cat-ion exchange
Vasily Dokuchaev - Father of Soil Science. Soil reaction (pH)
SOIL SOIL PROPERTIES
Mixture of mineral matter, organic matter, water, and air. Physical Characteristics Nutrient Characteristics
Soil is a mixture of mineral and organic matter lacking any Soil Texture, Chemical bonding
inherited rock structure. Consistency, & pH
Soil forms the earth's surface skin at the interface Structure Cat-ion Exchange
between the atmosphere and the lithosphere. Soil Compaction (Bulk Capacity (CEC)
Density) Nutrient Availability
The soil layer of these 6,000 kilometers is only one to two meters Soil Moisture
thick. Soil Color
SAPROLITE
Weathered rock that retains remnant rock structure. PHYSICAL PROPERTIES OF SOIL- TEXTURE
Is an expression used to describe the physical components of the
soil. Influences the soil chemistry pertaining to the soil's ability to
maintain its structure, the restriction of water flow and the
contents of the particles in the soil
Refers to the relative percentages of the
HUMUS SOIL • Sand
Is a dark, organic material that forms in soil when plant • Silt
and animal matter decay. • Clay
BIOLOGICAL PROPERTIES OF SOIL
Refers to the living organisms found in the soil
Includes both the micro and macro plants and animals.
PLANTS SOIL STRUCTURE
MICRO MACRO Soil structure refers to the manner in which these individual soil
particles are grouped together to form clusters of particles called
Bacteria aggregates.
Fungi Roots of higher plants
Actinomycetes Types of Soil Structure
The classification of soil structural forms is based largely on shape.
ANIMALS Platy - thin horizontal sheets overlapping each other
MICRO MACRO Prismatic - long vertical columns without rounded tops
Block-like - irregular shaped cubes
Earthworms Spheroidal - rounded and often referred to as granular or
Nematodes Rodents crumb; usually found in the topsoil
Protozoa Arthropods
Gastropods
SOIL CONSISTENCY
CREATED BY: KT.P
, SOIL CHEMISTRY
1
Why is studying soil chemistry is important in Engr.? CHEMICAL PROPERTIES OF SOIL
Electrical conductivity of soil is essential in agriculture and The ability of soil to provide the essential elements needed for plant
environmental science since it directly influences plant growth and growth includes:
may be used to assess soil health. The availability of NPK elements
Conductivity is a measure of a material's ability to Other chemical properties
conduct electrical current, and in the case of soil Clay minerals present
Humus content
J. Thomas Way is considered the Father of Soil Chemistry. Cat-ion exchange
Vasily Dokuchaev - Father of Soil Science. Soil reaction (pH)
SOIL SOIL PROPERTIES
Mixture of mineral matter, organic matter, water, and air. Physical Characteristics Nutrient Characteristics
Soil is a mixture of mineral and organic matter lacking any Soil Texture, Chemical bonding
inherited rock structure. Consistency, & pH
Soil forms the earth's surface skin at the interface Structure Cat-ion Exchange
between the atmosphere and the lithosphere. Soil Compaction (Bulk Capacity (CEC)
Density) Nutrient Availability
The soil layer of these 6,000 kilometers is only one to two meters Soil Moisture
thick. Soil Color
SAPROLITE
Weathered rock that retains remnant rock structure. PHYSICAL PROPERTIES OF SOIL- TEXTURE
Is an expression used to describe the physical components of the
soil. Influences the soil chemistry pertaining to the soil's ability to
maintain its structure, the restriction of water flow and the
contents of the particles in the soil
Refers to the relative percentages of the
HUMUS SOIL • Sand
Is a dark, organic material that forms in soil when plant • Silt
and animal matter decay. • Clay
BIOLOGICAL PROPERTIES OF SOIL
Refers to the living organisms found in the soil
Includes both the micro and macro plants and animals.
PLANTS SOIL STRUCTURE
MICRO MACRO Soil structure refers to the manner in which these individual soil
particles are grouped together to form clusters of particles called
Bacteria aggregates.
Fungi Roots of higher plants
Actinomycetes Types of Soil Structure
The classification of soil structural forms is based largely on shape.
ANIMALS Platy - thin horizontal sheets overlapping each other
MICRO MACRO Prismatic - long vertical columns without rounded tops
Block-like - irregular shaped cubes
Earthworms Spheroidal - rounded and often referred to as granular or
Nematodes Rodents crumb; usually found in the topsoil
Protozoa Arthropods
Gastropods
SOIL CONSISTENCY
CREATED BY: KT.P
